CN1647548B - Service access and conferencing system and method in a telecommunications network - Google Patents

Service access and conferencing system and method in a telecommunications network Download PDF

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Publication number
CN1647548B
CN1647548B CN028279417A CN02827941A CN1647548B CN 1647548 B CN1647548 B CN 1647548B CN 028279417 A CN028279417 A CN 028279417A CN 02827941 A CN02827941 A CN 02827941A CN 1647548 B CN1647548 B CN 1647548B
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China
Prior art keywords
service
isp
server
user
network
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CN028279417A
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CN1647548A (en
Inventor
A·查尼
C·布拉迪
P·蒂德维尔
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Telefonaktiebolaget LM Ericsson AB
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Telefonaktiebolaget LM Ericsson AB
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Priority claimed from US10/013,093 external-priority patent/US7184415B2/en
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    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L12/00Data switching networks
    • H04L12/02Details
    • H04L12/16Arrangements for providing special services to substations
    • H04L12/18Arrangements for providing special services to substations for broadcast or conference, e.g. multicast
    • H04L12/1813Arrangements for providing special services to substations for broadcast or conference, e.g. multicast for computer conferences, e.g. chat rooms
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W4/00Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/06Selective distribution of broadcast services, e.g. multimedia broadcast multicast service [MBMS]; Services to user groups; One-way selective calling services
    • H04W4/08User group management
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L12/00Data switching networks
    • H04L12/02Details
    • H04L12/16Arrangements for providing special services to substations
    • H04L12/18Arrangements for providing special services to substations for broadcast or conference, e.g. multicast
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L65/00Network arrangements, protocols or services for supporting real-time applications in data packet communication
    • H04L65/1066Session management
    • H04L65/1069Session establishment or de-establishment
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L65/00Network arrangements, protocols or services for supporting real-time applications in data packet communication
    • H04L65/1066Session management
    • H04L65/1101Session protocols
    • H04L65/1104Session initiation protocol [SIP]
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L67/00Network arrangements or protocols for supporting network services or applications
    • H04L67/50Network services
    • H04L67/51Discovery or management thereof, e.g. service location protocol [SLP] or web services
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L69/00Network arrangements, protocols or services independent of the application payload and not provided for in the other groups of this subclass
    • H04L69/30Definitions, standards or architectural aspects of layered protocol stacks
    • H04L69/32Architecture of open systems interconnection [OSI] 7-layer type protocol stacks, e.g. the interfaces between the data link level and the physical level
    • H04L69/322Intralayer communication protocols among peer entities or protocol data unit [PDU] definitions
    • H04L69/329Intralayer communication protocols among peer entities or protocol data unit [PDU] definitions in the application layer [OSI layer 7]
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04MTELEPHONIC COMMUNICATION
    • H04M3/00Automatic or semi-automatic exchanges
    • H04M3/42Systems providing special services or facilities to subscribers
    • H04M3/56Arrangements for connecting several subscribers to a common circuit, i.e. affording conference facilities
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04MTELEPHONIC COMMUNICATION
    • H04M3/00Automatic or semi-automatic exchanges
    • H04M3/42Systems providing special services or facilities to subscribers
    • H04M3/56Arrangements for connecting several subscribers to a common circuit, i.e. affording conference facilities
    • H04M3/567Multimedia conference systems
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04MTELEPHONIC COMMUNICATION
    • H04M7/00Arrangements for interconnection between switching centres
    • H04M7/006Networks other than PSTN/ISDN providing telephone service, e.g. Voice over Internet Protocol (VoIP), including next generation networks with a packet-switched transport layer
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04QSELECTING
    • H04Q3/00Selecting arrangements
    • H04Q3/0016Arrangements providing connection between exchanges
    • H04Q3/0029Provisions for intelligent networking
    • H04Q3/0054Service creation techniques
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04QSELECTING
    • H04Q3/00Selecting arrangements
    • H04Q3/0016Arrangements providing connection between exchanges
    • H04Q3/0062Provisions for network management
    • H04Q3/0066Bandwidth allocation or management
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W8/00Network data management
    • H04W8/22Processing or transfer of terminal data, e.g. status or physical capabilities
    • H04W8/24Transfer of terminal data
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L12/00Data switching networks
    • H04L12/02Details
    • H04L12/16Arrangements for providing special services to substations
    • H04L12/18Arrangements for providing special services to substations for broadcast or conference, e.g. multicast
    • H04L12/185Arrangements for providing special services to substations for broadcast or conference, e.g. multicast with management of multicast group membership
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L12/00Data switching networks
    • H04L12/02Details
    • H04L12/16Arrangements for providing special services to substations
    • H04L12/18Arrangements for providing special services to substations for broadcast or conference, e.g. multicast
    • H04L12/1859Arrangements for providing special services to substations for broadcast or conference, e.g. multicast adapted to provide push services, e.g. data channels
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L67/00Network arrangements or protocols for supporting network services or applications
    • H04L67/50Network services
    • H04L67/54Presence management, e.g. monitoring or registration for receipt of user log-on information, or the connection status of the users
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04MTELEPHONIC COMMUNICATION
    • H04M3/00Automatic or semi-automatic exchanges
    • H04M3/42Systems providing special services or facilities to subscribers
    • H04M3/42025Calling or Called party identification service
    • H04M3/42034Calling party identification service
    • H04M3/42059Making use of the calling party identifier
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04MTELEPHONIC COMMUNICATION
    • H04M3/00Automatic or semi-automatic exchanges
    • H04M3/42Systems providing special services or facilities to subscribers
    • H04M3/42365Presence services providing information on the willingness to communicate or the ability to communicate in terms of media capability or network connectivity
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04MTELEPHONIC COMMUNICATION
    • H04M3/00Automatic or semi-automatic exchanges
    • H04M3/42Systems providing special services or facilities to subscribers
    • H04M3/42365Presence services providing information on the willingness to communicate or the ability to communicate in terms of media capability or network connectivity
    • H04M3/42374Presence services providing information on the willingness to communicate or the ability to communicate in terms of media capability or network connectivity where the information is provided to a monitoring entity such as a potential calling party or a call processing server
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04MTELEPHONIC COMMUNICATION
    • H04M3/00Automatic or semi-automatic exchanges
    • H04M3/42Systems providing special services or facilities to subscribers
    • H04M3/56Arrangements for connecting several subscribers to a common circuit, i.e. affording conference facilities
    • H04M3/563User guidance or feature selection
    • H04M3/565User guidance or feature selection relating to time schedule aspects

Abstract

The invention provides a system and method of providing a subscriber service to service users in a telecommunications network. The method comprises: registering in the network, a plurality of service users who subscribe to the subscriber service; sending the registration information including service capability information of a service provider to a server present in the network from at least one service provider as the user service provider; and sending an identity of the service provider to the plurality of service users from the present server. The system includes at least one service provider and a Presence and Instant Messaging (PIM) server. The PIM server includes: a means for determining, from the registration information received from each service provider, a type of service that is provided by the service provide; and a communication means for notifying the service users of the identity of the service provider when the service provider registers. The system and method of the invention provides access to a service in a telecommunications network when the user does not know the network ID of the server providing the service.

Description

Service access and conference system and method in the communication network
Technical field
The present invention relates to telecommunication system.Particularly, without restriction, the present invention relates in communication network, use session initiation protocol (SIP) to be provided to the access of service and/or set up the system and method for Conference Calling.
Background technology
Radio telecommunication network develops into the third generation (3G) packet switching network from the second generation (2G) circuit-switched network.The reference configuration of 3G wireless network is researched and developed by third generation collaborative project (3GPP).The 3GPP network configuration is used for call set up signaling with the session initiation protocol (SIP) of the Internet engineering duty group (IETF) research and development.Then, by the present networks transmission medium.The SIP standard is described in RFC 2543, and it is incorporated by reference in this text examines.
In the SIP network, the user registers their existence on sub-network by CSCF (CSCF).Each user has unique SIP ID, and it is to follow the address that the user arrives different terminals.For example, when the user was sitting in the desk front, he can be registered as him before desk himself.Desktop telephones is selected position that road send so that it is known with user's calling to the SIP registration message that CSCF sends the hardware device ID that has unique SIP ID of user and telephone set.Registration message also comprises the existence of expression user current state.For example, the user can point out him before desk, can't receipt of call but current.
Existence in the registration message is selected the road send to existence and instant message (PIM) server that links to each other with CSCF.The PIM server offers other user on the network with user's existence, makes the user monitor other user's existence simultaneously.The user can be before sending calling determines the opposing party's existence (for example registered, unregistered, busy, or the like) by the display such as phone or computer display on its desk.
Originating user does not need to specify the definite destination address relevant with the targeted customer.The 3GPP network uses the another name relevant with the specific user automatically to determine their registered terminal or equipment mark, and automatically formats with being sent in and have now on the IP network and the communicating by letter of registered equipment.Thereby the 3GPP network configuration provides center control and Control on Communication mechanism independently.For registered user, 3GPP network and correlation unit are followed the tracks of the sign of user's definite position and user's registered terminal, and Route Selection and can carrying out on existing IP network and described registered user's communications in view of the above.
The telecommunication service that offers the user in communication network is the convention business that is used for the three parts or sets up Conference Calling more in many ways.In the 3GPP network configuration, Conference server invites difference side participate in to call out in call establishment, and mixes when call setup and select the road and send medium.Conference server can be in the inside or the outside of CSCF network, and still the user of request service must know the network ID of Conference server.The client user of given server ID can be to the message of server transmission such as SIP REFER message, Conference Calling of request server initialization.For user A is initialised to the Conference Calling of user B and user C, user A sends three REFER message to Conference server, the three parts of sign Conference Calling.This REFER message can directly send to Conference server from user A, perhaps can send by the CSCF network.Then, Conference server sends out the SIP INVITE to user A, B and C.When each user participated in calling, the meeting bridge in the server was carried out medium and is mixed.Yet the user of this solution requirement request service knows the network ID of Conference server.
Yet, when the user wishes to use when residing in particular server professional, such problem appears, and the user does not also know that the IP address or hostname of server claims.For example, under the situation of Conference Calling, the user who wishes to set up Conference Calling may not know the network ID such as IP address or other Hostname of Conference server.Under the situation of the network ID that does not have Conference server, the user can not with the meeting server communication to insert conference service and to set up Conference Calling.
In the solution of recommending, the user sends multicast message by network, and whether inquiry has any Conference server to use.Yet this is not a reliable solution, because may can use without any Conference server, and perhaps unique too much jumping figure of response server potential range.
Therefore, it will be favourable providing a kind of system and method that is provided to access professional in the communication network as the user and when not knowing to provide the network ID of server of service.Provide that a kind of automatically to set up the system and method for Conference Calling also will be favourable when meeting predetermined standard time.The invention provides a kind of like this system and method.
Summary of the invention
The invention provides a kind of system and method, be used for service node in the communication network and it usually is registered as self has the service specified type, and some the relevant ability of COS that is provided with it is provided.Existence of having revised and instant message (PIM) server offers this service ability information the user of this service of reservation subsequently.Like this, provide as the user and inserted the ability of this service when not knowing to provide the network ID of server of this service.
In one aspect, the present invention relates to a kind of service-user in communication network the access user service method is provided.In one embodiment, network uses SIP control signaling to carry out call setup and calls out control.This method is registered a plurality of service-users of this user's service of reservation in network; And in network registration as at least one ISP of user ISP.With ISP's service ability information stores in having server, exist server subsequently to a plurality of service-users notices network internal storage ISP's sign.
In yet another aspect, the present invention relates to a kind of service-user in communication network the system that inserts user's service is provided.In one embodiment, this network uses SIP control signaling to carry out call setup and calls out control.The PIM server that this system comprises at least one ISP and revised.The server supplier sends register information to network, comprising the service ability information that is used for the ISP.The PIM server of having revised receives register information, and stores register information, information on services and a plurality of service-user and ISP's the information that exists.The PIM server comprises device, is used for determining the COS that the ISP provides according to the register information that receives from each ISP.The PIM server also comprises communicator, is used for the sign to service-user notice ISP when the ISP registers.
Aspect another, the present invention relates to a kind of method that balance business load between the ISP that the user serves is provided at a plurality of service-users in telecommunication network route.The a plurality of ISPs that provide the user to serve are provided in network this method.Modification from ISP's registration message to comprise the indication of the business load of handling by each ISP.Analyze the business load indication to determine the most underloaded service supplier, on network, have the most underloaded service supplier to a plurality of service-user notices then.
Aspect another, the present invention relates to a kind of registration in the communication network that is equilibrated at, with the method for business load between a plurality of Conference server that conference service is provided to a plurality of users.This method starts from sending first request message that is used for conference service from the server that exists of the first request user in network.This request message comprise will connect by Conference server the first request user and the sign of first party.Exist server subsequently in a plurality of Conference server first to be distributed to the first request user.When existing server to receive to be used for second request message of conference service, exist server to determine that whether second request message is also from the first request user.If then exist server that second request message is transmitted to first Conference server.Yet, if second request message from the second request user, exists server in a looping fashion second Conference server to be distributed to the second request user.
In aspect another, the present invention relates to a kind of method of in the IP Telecommunication Network network, setting up Conference Calling between as first user of conference owner and a plurality of other users as the meeting participant.This IP network comprises Conference server and at least one service call State Control function (S-CSCF) of CCF is provided for the user.First user is registered as conference owner to a S-CSCF, and the meeting participant is discerned by a S-CSCF.The one S-CSCF discerns each participant's appointment S-CSCF, and sends request to each participant's S-CSCF, and the participant that request is served as participant's S-CSCF meets each S-CSCF of predetermined standard time that initiates Conference Calling and notifies a S-CSCF.Each participant's S-CSCF detects subsequently when each participant has satisfied predetermined standard, and sends a notice to a S-CSCF.The one S-CSCF determines subsequently whether the participant has satisfied the preassigned of initiating Conference Calling, if then indicate this Conference Calling of Conference server initialization.
Aspect another, the present invention relates to a kind of system that in the IP Telecommunication Network network, is used for setting up between as first user of conference owner and a plurality of other users Conference Calling as the meeting participant.Each user is by the S-CSCF service that CCF is provided for the user.This system comprises the S-CSCF, Conference server and each participant's that serve first user the interior PIM server of S-CSCF.The one S-CSCF comprises device, is used for first user is registered as conference owner, and receives meeting participant's sign from the owner.The one S-CSCF also comprises device, is used to discern each participant's appointment S-CSCF, and notifying device, is used for sending a request message and from each participant's S-CSCF reception notification to each participant's S-CSCF.Request message requests participant's S-CSCF notifies a S-CSCF when to satisfy the preassigned of initiating Conference Calling by the participant that participant's S-CSCF is serving.The one S-CSCF also comprises device, is used for determining whether the participant has met the preassigned of initiating Conference Calling, and device, has satisfied preassigned then indicates conference apparatus initialization Conference Calling in case be used for definite participant.Initialization and execution Conference Calling when conference apparatus is indicated at a S-CSCF.PIM server in each participant's the S-CSCF comprises device, be used for determining whether each participant has satisfied preassigned, and communicator, be used for having satisfied predetermined standard time to S-CSCF transmission notice as each participant that participant's S-CSCF is serving.
Aspect another, the present invention relates to the possessory S-CSCF in the IP Telecommunication Network network.Conference owner of possessory S-CSCF service, and in the Conference Calling of satisfying between predetermined standard time indication Conference server initialization conference owner and a plurality of meeting participant.Possessory S-CSCF comprises device, the sign that is used to register conference owner and receives the meeting participant from the owner; And device, be used to discern each participant's S-CSCF.Possessory S-CSCF also comprises communicator, be used for sending a request to each participant's S-CSCF, the participant that request participant's S-CSCF is serving at participant's S-CSCF has satisfied the predetermined standard time of initiating Conference Calling and has notified participant's S-CSCF to possessory S-CSCF, and is used for having satisfied predetermined standard time notice of S-CSCF reception from each participant as the participant that participant's S-CSCF is serving.Possessory S-CSCF also comprises device, is used for determining whether the participant has satisfied the preassigned of initiating Conference Calling; And device, in case be used for determining that the participant has met preassigned and promptly indicated Conference server to initiate and carry out Conference Calling.
In aspect another, the present invention relates to a kind of method of in the IP Telecommunication Network network, setting up Conference Calling between as first user of conference owner and a plurality of other users as the meeting participant.This IP network comprises Conference server and at least one CSCF of CCF is provided for the user.The method comprising the steps of: to first user of Conference server registration as conference owner; By conference owner identification meeting participant; With the CSCF that discerns each participant by Conference server.Conference server sends a request to each participant's CSCF, and request CSCF satisfies the predetermined standard time notification of meetings server of initiating Conference Calling the participant that CSCF is serving.Each participant's CSCF detects each participant and when has satisfied preassigned, and each participant who serves as CSCF has satisfied predetermined standard time to notice of Conference server transmission.This determines succeeded by Conference server whether the participant has met the preassigned of initiating Conference Calling and in case determined that it is the initialization Conference Calling that the participant has met preassigned.
Description of drawings
By with reference to the accompanying drawings, in conjunction with specification, for a person skilled in the art, will understand the present invention better, its a plurality of purposes and advantage will be conspicuous, in the accompanying drawings:
Fig. 1 (prior art) is the simplified block diagram of a typical 3GPP network configuration part;
Fig. 2 (prior art) is the signaling diagram that the exemplary call of the interior SIP signaling of the 3GPP network configuration of diagram use Fig. 1 is set up signaling;
Fig. 3 A and 3B are a plurality of parts of diagram flow chart of first embodiment of method of the present invention when setting up Conference Calling;
Fig. 4 is the flow chart of diagram second embodiment of method of the present invention when setting up Conference Calling;
Fig. 5 is a diagram when execution signaling diagram of message flow between the node in 3GPP network during method of the present invention;
Fig. 6 is the flow chart of diagram step of the preferred embodiment of method of the present invention when setting up a group;
Fig. 7 A and Fig. 7 B are a plurality of parts of diagram flow chart of the embodiment of method of the present invention when initiating Conference Calling by Conference server; With
Fig. 8 is that instruction according to the present invention is made amendment, with the simplified block diagram of the part of the 3GPP network configuration of method shown in execution graph 7A and Fig. 7 B.
Embodiment
In the accompanying drawings, represent identical or similar unit with identical reference number in some accompanying drawings, illustrated each unit is not necessarily to scale.Referring now to Fig. 1,, is illustrated as the block diagram of typical 3GPP network configuration 10 parts.Illustrated part is suitable for setting up between the termination user of originating user that uses terminal A 11 and use terminal B 12 calls out.Main node in the 3GPP structure is CSCF (CSCF).Every side has a relevant CSCF.CSCF is a switch basically, and it is provided to the access of network and selects the road between all sides to all sides and sends call set up signaling.Each CSCF comprises proxy CSCF (P-CSCF), inquiry CSCF (I-CSCF) and serving CSCF (S-CSCF).
P-CSCF is first communication center to the user of network registration.When terminal A 11 registrations, the P-CSCF 13 that starts determines the ancestral home network 14 relevant with originating user, and carries out and specify the authentication and the checking of ancestral home network.When terminal A initiated a calling, the I-CSCF15 that starts was to start home subscriber server (HSS) 16 searching user's informations relevant with terminal A.HSS is given user's a master data base, and is to comprise the network entity of subscription-related information to support the network entity of actual treatment calling/dialogue.HSS also is used for determining and locating the S-CSCF 17 of originating user.Other user personality that the S-CSCF that starts provides service call and subscriber to use.The S-CSCF that starts also comprises and existing and instant message (PIM) server 18.
Termination (called) user also has a relevant ancestral home network 21.Termination ancestral home network comprises termination I-CSCF 22, termination HSS 23 and has the termination S-CSCF 24 of PIM server 25.Terminal B passes through termination P-CSCF to termination ancestral home network registration.In case finish call setup, then by IP network 27 switched-media between both sides.
Fig. 2 is the signaling diagram that illustrates the typical call set up signaling of SIP signaling in the 3GPP network configuration of using Fig. 1.At first, these two terminals are to network registration.Terminal A 11 sends a registration message 31 to the P-CSCF 13 that starts.The P-CSCF that starts use registration message " from " the ancestral home network 14 relevant with this specific user determined in the territory of appointment in the field, and the authentication and the checking of execution and appointment ancestral home network.Name server (DNS) record that is used for the ancestral home network points to the I-CSCF that starts, and in step 32, P-CSCF sends to the I-CSCF 15 that starts with registration message.In step 33, I-CSCF is to the address of the current S-CSCF 18 of the start HSS 16 inquiry originating users relevant with this specific originating user.In step 34, HSS returns to the address of the current S-CSCF of starting the I-CSCF that starts of this information of buffer memory.
In step 35, registration message is transmitted to the S-CSCF 18 that starts.In step 36, the S-CSCF that starts is to the profile information of the HSS inquiring user that the starts telephone set special service to determine that this originating user has been preengage or enabled, for example call congestion, calling transfer, voice mail, or the like.In step 37, HSS returns to profile information the S-CSCF that starts of this information of buffer memory.
Similarly, terminal B 12 sends to termination P-CSCF 26 with registration message 38.Termination P-CSCF determines the ancestral home network 21 relevant with this specific user according to registration message, and carries out and specify the authentication and the checking of ancestral home network.In step 39, registration message is transmitted to termination I-CSCF 22.Termination I-CSCF is at the step 41 inquiry termination HSS 23 termination S-CSCF 24 with identification and the current registration of localizing objects user.In step 42, the address of termination S-CSCF is returned to the termination I-CSCF of cache information.In step 43, registration message is transmitted to termination S-CSCF 24.In step 44, termination S-CSCF is to the telephone special service of profile information to determine that this termination user has preengage or enabled of termination HSS inquiring user B.In step 45, termination HSS returns to this profile information the termination S-CSCF of this information of buffer memory.
After this, terminal A 11 is by sending the call setup that a SIP INVITE 46 is initialised to terminal B to the P-CSCF 13 that starts.The multimedia communication of supporting SIP is including but not limited to voice, video, instant message, existence and a plurality of other data communication.In step 47, this INVITE is forwarded to the start I-CSCF 15 relevant with the ancestral home network that is used for originating user, and in step 48, this SIP INVITE is transmitted to the S-CSCF 18 that had before identified.
Other user characteristics business that the S-CSCF 18 that starts provides service call and terminal A 11 to use.In case verify this specific user can initialization this specific calling connect, the S-CSCF that then starts sends to the termination I-CSCF 22 relevant with termination user's ancestral home network 21 in step 49 with the SIP INVITE subsequently.In step 51, this INVITE is transmitted to termination S-CSCF subsequently.In step 52, termination S-CSCF determines the P-CSCF 26 of this termination end of current service B 12 according to termination user's profile.In step 53, this INVITE is transmitted to termination P-CSCF, it is transmitted to terminal B in step 54 with it subsequently.
Terminal B 12 is at step 55 SIP 200OK message response.The S-CSCF24 of termination P-CSCF 26 in step 56 is given this 200OK forwards on the ancestral home network of terminal B, and affirmation (Ack) 57 sent it back terminal B.Termination S-CSCF sends it back termination I-CSCF 22 in step 58 with this 200OK message, and will confirm that 59 send it back termination P-CSCF.In step 61, termination I-CSCF 22 sends to this 200OK message the S-CSCF 18 that starts in the ancestral home network 14 of terminal A, and will confirm that 62 send it back termination S-CSCF.
Start S-CSCF 18 in step 63 with this 200OK forwards to the I-CSCF15 that starts, and will confirm that 64 send it back termination I-CSCF 22.In step 65, the I-CSCF 15 that starts sends to the P-CSCF 13 that starts with this 200OK message, and will confirm that 66 send it back the S-CSCF 18 that starts.In step 67, the P-CSCF 13 that starts sends to terminal A 11 with this 200OK message, and will confirm that 68 return to the I-CSCF 15 that starts.At last, in step 69, terminal A sends to the P-CSCF 13 that starts with affirmation.In case discerned and confirmed and then, no longer needed the participation of 3GPP network by target terminal directly between two terminals, setting up data channel 70 on the present networks 27.
Fig. 3 A and Fig. 3 B are the parts of diagram flow chart of first embodiment of method of the present invention when setting up Conference Calling.The invention provides a kind of service node that is used on the network and usually himself is registered as method with specified service types some ability relevant with the COS that provided with it is provided.At first referring to Fig. 3 A, the user to network and PIM server registers preengages to the desired services such as conference service in step 71.In step 72, Conference server B is to network and PIM server registers.This registration message is made amendment in the present invention comprising the service ability of registration server, and under the situation of Conference server, the current business load of server.If because predetermined trigger event causes business load to change, this Conference server sends a new registration message in step 73.
In step 74, each registered user's of PIM server stores existence and service ability.The PIM server can comprise the predetermined tabulation of the COS that can be used as user's registration.The server that these COS are provided as the user to the PIM server registers, but the PIM server knows that they are actually the ISP.Single service of planting that provides can be provided a plurality of users.Yet, preferably, a parameter is added for example service=meeting to registration message at the end of URI.Use this mark, the PIM server must be a kind of service with this registration recognition.If the PIM server does not have the user who is disposed, for example, then return an error message because it can not handle the service registration type.In addition, can use more service, because these services will be not limited to specific predetermined tabulation.
In step 75, the PIM server exists on network and the sign of Conference server to user A notification of meetings server.Subsequently, user A can initiate to determine available Conference server from its terminal before a Conference Calling.In step 76, user A asks Conference Calling, and the participant in will calling out is notified to its S-CSCF and PIM server.In step 77, the PIM server determines whether to exist a plurality of registered Conference server according to its ISP's tabulation.If no, Conference server B is unique registered Conference server, and then this processing advances to step 82 (Fig. 3 B), and wherein the PIM server is selected the road with the meeting request and sent to Conference server B.
Yet, there are a plurality of registered Conference server if determine in step 77, this processing advances to step 78, and wherein the PIM server determines to have the Conference server of light business load.The PIM server is known the business load of each server, because each server sends the registration message that upgrades to the PIM server, report is because the variation of the business load that the predetermined trigger incident causes.Then, this processing advances to step 79 (Fig. 3 B), determines whether Conference server B has the lightest load.If not, then this processing advances to step 81, and the PIM server is selected the road with this request for conference and sent to and have the most underloaded another Conference server.Yet if Conference server B has the lightest load, the PIM server is selected the road in step 82 with this request for conference and is sent to Conference server B.
Referring to Fig. 4, illustrate the flow chart of second embodiment of method of the present invention when setting up Conference Calling simply, wherein the PIM server is carried out load balance on the basis of circulation.In this embodiment, Conference server needn't be reported their business load.In step 86, a plurality of Conference server and user are to the PIM server registers.When server registers, registration message preferably includes the expansion of the service ability of each registration server of sign.In step 87, first user sends to the PIM server with the Conference Calling request.This most handy REFER message is carried out, the sign that this message is pointed out simultaneously to ask the user and will be added other side of this meeting.In step 88, Conference server of PIM server-assignment is to the first request user.
The request user must send to the PIM server with a plurality of REFER message, invites all participants to add same meeting, and the PIM server must be given same Conference server with all REFER forwards of same meeting.Therefore, the PIM server tracks is when having distributed which Conference server to this user from the first request user when receiving a REFER message.In step 89, the PIM server receives another REFER message of request Conference Calling; And, determine that whether described another request is from the first request user in step 90.If then this processing advances to step 100, wherein the PIM server is given first Conference server with this another REFER forwards.For example, the PIM server can check in each REFER message " from " field, if this message from same request user, then the PIM server with this forwards to same Conference server.Yet, if " from " field shows a different request user, this processing advances to step 110, and wherein the PIM server is distributed to this user with the registered Conference server of the next one in a looping fashion.
Refer again to Fig. 3 B, in step 83, selected Conference server is invited the participant's add-on conference all that is identified.As hereinafter discussing in conjunction with Fig. 5, this can realize by sending a plurality of SIP INVITE from Conference server to the participant.In step 84, participant's add-on conference all of being invited, and in step 85, Conference server mixes and selects road transmission medium to each participant.
Fig. 5 is diagram instruction according to the present invention signaling diagram of message flow between the node in the 3GPP network when setting up Conference Calling.In order to simplify, each assembly of each CSCF has been combined to single CSCF intranodal.Terminal A 91 on the a.x.com of address is asking the Conference Calling of self terminal B 92, and described terminal B is the Conference server on the b.x.com of address.CSCF-1 93 registrations on the x.com of address of terminal A and Conference server.The terminal A just terminal C on request address c.y.com 94 adds calling.CSCF-2 95 registrations of terminal C on the y.com of address.
In step 96, terminal A 91 sends registration message to the relevant PIM server of CSCF-1 93 and it, and is userA@x.com with its self identification.Similarly, in step 97, terminal C 94 sends registration message to the relevant PIM server of CSCF-2 95 and it, and is userC@y.com with its self identification.In step 98, terminal A sends a reservation message to CSCF-1, and desired services is designated conference service.The form of reservation message can be as follows:
SUBSRIBE?userA@x.com?SIP/2.0
From:”Me”<userA@x.com>;tag=4321
To:”Me”<userA@x.com>;service=conference
In step 99, terminal B92 sends a registration message to CSCF-1 and relevant PIM server thereof, and himself is designated userB@x.com.The present invention also places an expansion in this registration message, in this case, be Conference server with the service identifiers of registered entities support.Come the form of the registration message of self terminal B can be as follows:
REGISTER?blinky@x.com?SIP/2.0
From:“Conference?Server”<blinky@x.com>;
Service=conference;tag=1234
To:“Conference?Server”blinky@x.com
Content-Type:application/service+xml
<users=4>
<media=audio>
<medio=video>
Like this, the PIM server needn't be kept the predefine tabulation of service-user name.On the contrary, the COS that is provided has been provided the numerical value of " service=" parameter.This has reduced the burden on the server widely, because the special supply that can carry out still less adapts to service-user.
The main body of message can comprise other code of descriptive xml or description node ability and current business load.The PIM server is preserved this information, and when asking a dialogue with convenient user, the PIM server can be transmitted to this request a server with correct ability.This service can be identified at the service labels interior (for example service=meeting) of URI ending.Selectively, source address can be come identification service with the form of Fu Wumingcheng @domain.com.When the existence of Conference server changes in response to predetermined trigger event, can send a new registration message to the PIM server from Conference server.For example, when Conference Calling was connected, Conference server can send the registration message of a renewal, upgraded the quantity of available port.The PIM server can use this information to carry out load balance.When registration during a plurality of Conference server, network can be managed load between them by at first selecting more underloaded Conference server.Intelligence in the PIM server is carried out load management, because the PIM server is known each registered Conference server and its present load.
Selectively, can use a programmable mutual voice response (P-IVR) unit to carry out registration from the equipment of not supporting SIP.The user who has inserted this equipment dials this P-IVR, and selects from audio menu.A selection can be to register on the SIP network, and another can be current group of tabulation and select to add particular group.
In step 101, the PIM server is notified service (for example meeting) available on x.com to terminal A, and the address/Hostname of applicable Conference server 92 is provided.The existence of meeting server can also be reported to the user.For example, the user can be registered by notified this Conference server, but current busy.In step 102, terminal A asks conference service.This preferably sends SIP REFER message by the PIM server in CSCF-1 and realizes.Come the form of the REFER message of self terminal A can be as follows:
REFER?userA@x.com?SIP/2.0
From:“Me”<userA@x.com>;tag=4321
To:“Me”<userA@x.com>;service=conference
Refer-To:“You”<userB@x.com>;
Referred-By:“Me”<userA@x.com>
Content-Type:application/service+xml
The PIM server identifies the parameter of the service=meeting in REFER message " arrival " field, and uses the address of Conference server or Hostname to replace the interior address of " arrival " field.The PIM server is transmitted to Conference server with this message in step 103 subsequently.REFER message has Refer-To stem and the Referred-By stem that INVITE does not comprise.The Referred-By stem identifies a side's of request Conference Calling sign (userA@x.com), and the Refer-To stem identifies a side's that will connect address (userB@x.com) in Conference Calling.An expansion is a conference service with requested service identifiers.
By sending a plurality of REFER message from terminal A to Conference server, Conference server can be set up it and send the participant list of the invitation that adds meeting to it.Selectively, after Conference server responded a REFER message, terminal A can directly send to Conference server with all REFER message subsequently.This no longer needs which user of PIM server tracks to be assigned to which service node, allows the request user to continue to send service request to Conference server simultaneously.
When existence provided the specific a plurality of registered user who is requested to serve, the PIM server can send to message all the registered users that this service is provided known to it.Described message can be SIP INVITE or SIP REFER message, depends on institute's requested service.For conference service, the PIM server preferably sends INVITE.According to the response that receives from Conference server, the PIM server is selected available one (and preferably the lightest one of load), and the user who then identification is carried out Conference Calling is connected to selected Conference server.
In step 104 and 105, Conference server 92 sends an INVITE by CSCF-1 93 to terminal A 91.In step 106 and 107, Conference server sends an INVITE by CSCF-295 to terminal C 94.In step 108, terminal A shows that by a SIP 200OK message is returned to CSCF-1 it has received INVITE.CSCF-1 responds with affirmation 109, and gives Conference server in step 111 with this 200OK forwards.Conference server uses confirms 112 responses.Similarly, in step 113, terminal C shows that by SIP 200OK message is returned to CSCF-2 it receives INVITE.CSCF-2 uses and confirms 114 responses, and gives Conference server in step 115 with the 200OK forwards.Conference server uses confirms 116 responses.Then, the Conference server mixed-media, and in step 117 medium are selected the road and send to terminal A, select the road in step 118 and send to terminal C.
The present invention can also be user's group with service registration.By the request service, the user can add this group to, and intercommunication mutually.For example, the owner of game server can sponsor a test recreation.This owner can be registered as the service with the ability that can play the test recreation, for example by sending minimum two and maximum four game players of text message back and forth.With regard to the semanteme of message, server looks like a user, but the PIM server knows that this is one group.All information that game player sends to this group all will send to and be registered as possessory that people of this group.All message that this owner sends to this group all will be broadcast to all game players.Thereby, in game process, a problem is sent to the participant from server, when the participant got answer and press " carriage return " key, answer sent to server from the participant.
Fig. 6 is the flow chart of diagram step of the preferred embodiment of the inventive method when setting up a group that plays such as test.Can be to the interested game player of test recreation in step 121 reservation test game services.In step 122, the user who has this recreation is a packet service (for example testing game server) to network and PIM server registers.REGISTER message can show that this recreation is available now, and perhaps it is current unavailable.The owner can specify some condition, for example the game player's that must register before calling recreation minimum number and can add the game player's of recreation maximum quantity.In step 123, the PIM server is notified existence test game services and its current state to the game player of reservation test game services.The registered game player's of PIM server monitoring quantity and their state, and can notify the game player of game server predetermined quantity when to register with available.
Game server is known the member on other CSCF, because it has obtained the notice of their reservation.If game server need verify they existence (they are online, off-line, busy, or the like), it can send a reciprocal reservation message to obtain change as the game player notice of state to each game player's territory, ancestral home.The address of game player's I-CSCF can obtain by the special CSCF dns lookup of execution according to game player's domain name.The address of game player's ancestral home I-CSCF is the needed full detail of game server, because I-CSCF is subsequently according to HSS that service is provided to this game player or state that S-CSCF determines the game player.
Selectively, in the initialization registration process, and do not wait for before calling recreation and satisfy all conditions that when each specified conditions such as new registration such as the particular game player occurred, the PIM server can send a notice to the owner.Subsequently, the owner has the condition of overthrowing previous sign and the option that still calls this service.
In step 124, the owner starts recreation and sends one and upgrades registration message, for example identify game player's quantity, game player's standard or ID, medium type, or the like.In step 125, notify the new state of test game services and the standard of playing this recreation to potential game player.In step 126, interested game player asks to participate in this recreation.
In step 127, game server invites standard compliant game player to add this recreation.In step 128, the game player who accepts the invitation sends to game server with response.In step 129, game server is at game server and add between the player of this calling and set up a Conference Calling.The game server mixed-media, and medium are selected the road send to each player with exchange toy problem and answer.
Fig. 7 A and Fig. 7 B are the parts of diagram flow chart of the embodiment of method of the present invention when Conference server is initiated a Conference Calling.In step 131, be about the owner in advance to Conference server such as the specific user of user A.In step 132, user A provides a plurality of standards that are used to initiate Conference Calling to Conference server.These standards for example can comprise whether among possible time started of maximum quantity, Conference Calling of participant's minimum number, participant or concluding time, participant's title or address, the participant's (another name) that these identified each is that enforceable, optional or interchangeable participant, the owner can overthrow standard and indicate Conference server to initiate the participant's of Conference Calling number of thresholds.
In step 133, in response to the reservation of user A, Conference server identifies each participant's S-CSCF, and asks the PIM server in each CSCF to notify each participant who identifies when " existence " and available to Conference server.In step 134, the participant who is identified is individually to their S-CSCF registration, and subsequently to wherein PIM server registers.Registration message shows also whether each participant is current available.In step 135, when the participant that each PIM server is served to Conference server notice PIM server exists with available.When the notice of the availability that receives the participant who identifies about each from each PIM server, Conference server is in step 136 relatively current state and predefined standard, and determines whether to initiate a Conference Calling.
If meet the standard of initiating Conference Calling, then this processing advances to the step 141 of Fig. 7 B, wherein Conference server initialization Conference Calling.Yet, if do not meet the standard of initiating Conference Calling, then this processing advances to step 137, and wherein Conference server determines whether disabled or non-compliant participant's quantity can be overthrown standard and indicate Conference server to initiate the predefine number of thresholds of Conference Calling less than the owner.If disabled participant's quantity is not less than threshold value, then this processing turns back to step 134, and continues to wait for other registration from the participant who is identified.
Yet if disabled participant's quantity is lower than threshold value, this processing advances to step 138, and wherein Conference server sends a status report or message to the owner, and it is relevant with available participant's quantity, any disabled participant's sign.In step 139, the owner has the selection of overthrowing remaining standard and initiating Conference Calling subsequently.If the owner does not overthrow this standard, then step 134 is returned in this processing, and continues to wait for other registration from the participant who is identified.Yet if the owner has overthrown standard, this processing advances to the step 141 of Fig. 7 B, and wherein this Conference server is initiated Conference Calling.
Referring now to Fig. 7 B,, Conference server is for example initiated Conference Calling by send a SIP INVITE to each participant in step 141.When all participants had added meeting, Conference server is mixed-media as required, and medium are transmitted to the owner and other all sign participants.In step 142, Conference server receives a message from one of participant.In step 143, server determines that whether this message is from the owner.Any message that sends to server from the owner will be sent to all members, so this processing advances to step 147, wherein Conference server sends to all participants with this message.Yet any message that sends from one of participant except the owner will only be sent to this owner.Therefore, if determine that in step 143 this message is not from the owner, then this processing advances to step 144, and wherein Conference server sends to the owner with this message.
The owner has subsequently and this message is sent it back server or the indication server sends to the message that is received remaining participant's selection.Thereby in step 145, the owner determines whether this message is the message that should send to all participants in the Conference Calling.If not, then this processing advances to step 146, and wherein the owner is by sending it back a response message to this message response to Conference server.Yet, be the message that should send to all participants if the owner determines this message, this processing advances to step 147, and wherein Conference server sends to this message all participants of this Conference Calling.Should be understood that the user with non-SIP equipment can register by P-IVR participates in such Conference Calling.
Fig. 8 is that instruction according to the present invention is made amendment with the simplified block diagram of the part of the 3GPP network configuration 150 of method shown in execution graph 7A and Fig. 7 B.IP network is illustrated as and comprises the Conference server of having revised 152.This Conference server of having revised is an independent IP node, and it can send and receive the sip message of SIP Control Network part (CSCF, PIM etc.) 11-26, and route and transmission IP packet.In case the specific user preengages as the owner to the Conference server of having revised, and provide the standard of initiating Conference Calling to the Conference server that this has been revised, then this Conference server of having revised monitors the participant's who is identified state, reported as their PIM server, and determined whether to meet described standard.But when all participant's times spent, then this standard is satisfied or is overthrown by the owner, and the Conference server of having revised is communicated by letter with participant's CSCF to invite the participant and to initiate Conference Calling.In case initiated Conference Calling, the Conference server of then having revised remains in the communication link of having set up, and transmits and send the message of participant's transmission, described at Fig. 7 A and Fig. 7 B.
Believe that operation of the present invention and structure will be conspicuous according to foregoing detailed description.Though illustrated in and the system and method described be characterized as preferably, should understand at an easy rate under the situation that does not break away from the scope of setting forth in claims of the present invention, can carry out various changes and modification therein.For example, for a person skilled in the art, the present invention obviously is not restricted to provide conference service, and can implement to be provided at available any other service and special service in the data communication network.For example, different services can comprise the server as public switched telephone network (PSTN) gateway registration, and it makes sip user can call out PSTN user.Similarly, the 2G telephone set can be registered in the SIP network, if this call enters SGW.
In addition, though described the use of particular network structure and particular message and signaling protocol with reference to current preferred exemplary embodiment of the present invention, the execution mode of these structures and signaling only is illustrative.As a kind of explanation, independent service (service host) can reside in the S-CSCF of ancestral home, perhaps selectively, it can another network node in IP network in.A kind of so selectable network node can be medium resource service (MRS) node in the existing IP network.In this case, S-CSCF selects the road with service request signal and sends to the service host that is identified.Service host initiates to be designated the calling between other the registration member of possessory originating user and all subsequently.Between all members, set up media path by service host.Therefore, all such modifications, expansion, variation, replacement, interpolation, deletion and combination etc. all will be regarded as within the scope of the invention, and scope of the present invention is only defined by claims.

Claims (8)

1. the service-user in communication network provides the access user service method, and described method comprises step:
A plurality of service-users of the described user's service of registration reservation in network;
Have a server place in described network, receive a registration message from least one ISP as the user ISP, described registration message comprises ISP's service ability information; With
In case the described server that exists is determined to be complementary by the described service ability information that described ISP provided and described user's service of being preengage by described a plurality of service-user, then from the described sign that exists server to send the ISP to described a plurality of service-users;
Wherein, described network uses initial session protocol SIP control signaling to carry out call setup and call out control, comprises from the step that exists server to send registration message of at least one ISP in network:
Revise a SIP registration message to comprise ISP's service ability information; With
From the ISP to existing server to send the SIP registration message; And
As long as ISP's service ability or existence change, then upgrade the SIP registration message to existing server to send one from the ISP.
Claim 1 the access user service method is provided, further comprise as long as the ISP upgrades the SIP registration message to existing server to send one, then to the change of service-user notification service supplier's service ability.
3. the service-user in communication network provides the access user service method, and described method comprises step:
A plurality of service-users of the described user's service of registration reservation in network;
Have a server place in described network, receive a registration message from least one ISP as the user ISP, described registration message comprises ISP's service ability information;
Wherein, service ability information comprises the service specified type, comprises in the step that exists server memory to store up ISP's service ability information:
Exist the server memory storage can be registered as the predefine tabulation of ISP's COS; With
A kind of and specified service types ISP in the COS in the predefine tabulation is mated;
In case the described server that exists is determined to be complementary by the described service ability information that described ISP provided and described user's service of being preengage by described a plurality of service-user, then from the described sign that exists server to send the ISP to described a plurality of service-users;
Wherein, described network uses initial session protocol SIP control signaling to carry out call setup and call out control, comprises from the step that exists server to send registration message of at least one ISP in network:
Revise a SIP registration message to comprise ISP's service ability information; With
From the ISP to existing server to send the SIP registration message.
4. the service-user in communication network provides the access user service method, and described method comprises step:
A plurality of service-users of the described user's service of registration reservation in network;
Have a server place in described network, receive a registration message from least one ISP as the user ISP, described registration message comprises ISP's service ability information;
In case the described server that exists is determined to be complementary by the described service ability information that described ISP provided and described user's service of being preengage by described a plurality of service-user, then from the described sign that exists server to send the ISP to described a plurality of service-users;
Wherein service ability information comprises that service specified type and this method also comprise step:
Determine to exist server whether to support the service specified type by there being server; With
If exist server not support the service specified type, then an error correction message is sent to this ISP;
Wherein said network uses initial session protocol SIP control signaling to carry out call setup and call out control, comprises from the step that exists server to send registration message of at least one ISP in network:
Revise a SIP registration message to comprise ISP's service ability information; With
From the ISP to existing server to send the SIP registration message.
5. the service-user in communication network provides the access user service method, and described method comprises step:
A plurality of service-users of the described user's service of registration reservation in network;
Have a server place in described network, receive a registration message from least one ISP as the user ISP, described registration message comprises ISP's service ability information; With
In case the described server that exists is determined to be complementary by the described service ability information that described ISP provided and described user's service of being preengage by described a plurality of service-user, then from the described sign that exists server to send the ISP to described a plurality of service-users;
Wherein said network uses initial session protocol SIP control signaling to carry out call setup and call out control, comprises from the step that exists server to send registration message of at least one ISP in network:
Revise a SIP registration message to comprise ISP's service ability information; With
From the ISP to existing server to send the SIP registration message;
Wherein also comprise and revise the SIP registration message to comprise the indication of the business load of handling by the ISP from the step that exists server to send registration message of at least one ISP in network.
6. claim 5 provides the access user service method, also comprise: from existing before server sends ISPs' sign to a plurality of service-users, the business load that analysis is being handled by the ISP is to determine the current step that whether can serve other service-user of ISP, in case determine the current service-user that can not serve other of ISP, then this step:
This ISP is categorized as exists but disabled; With
Notify this ISP's sign to a plurality of service-users, and this ISP is current unavailable.
Claim 5 the access user service method is provided, from existing before server sends ISPs' sign to a plurality of service-users, also comprise step:
Whether analyze the business load of being handled by the ISP lighter than another the registered ISP's who provides the user to serve load with definite this ISP; With
In case determine that this ISP is lighter unlike another registered ISP's load, then from existing server to send another registered ISP's sign to a plurality of service-users.
8. the service-user in communication network provides the system that inserts user's service, and described system comprises:
At least one ISP sends registration message to network, and described registration message comprises ISP's service ability information; With
Exist and instant message PIM server, it receives register information and storage register information, information on services and a plurality of service-user and ISP's the information that exists, and described PIM server comprises:
Be used for determining the device of one type service providing by the ISP according to the register information that receives from each ISP; With
Communicator is used for when the ISP registers, to service-user notification service supplier's sign;
With the connected node of PIM server communication, described connected node is operationally set up a connection between the service-user of subscriber service and the registered ISP that provides the user to serve,
Wherein this network uses session initiation protocol SIP control signaling, and described connected node is CSCF CSCF.
CN028279417A 2001-12-07 2002-12-06 Service access and conferencing system and method in a telecommunications network Expired - Fee Related CN1647548B (en)

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US10/013,093 2001-12-07
US10/013,093 US7184415B2 (en) 2001-12-07 2001-12-07 Service access system and method in a telecommunications network
US10/060,747 2002-01-30
US10/060,747 US7151753B2 (en) 2001-12-07 2002-01-30 System and method for establishing a conference call
PCT/IB2002/005169 WO2003049459A1 (en) 2001-12-07 2002-12-06 Service access and conferencing system and method in a telecommunications network

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